Akashic Guitar effects PCB lookup
DECAYRATE

Enclosure not stated · 2 knobs

Lectric-FX

ABACUS- 8 Step Analog Sequencer

Based on the Electro Harmonix Sequencer Drum

Category
Utility
Controls
Decay · Rate
Price
$18.99in stock
Buy the PCB at Lectric-FX Build document

From the vendor

Welcome to the Lectric-FX ABACUS, our first foray outside the world of pedals.

A faithful recreation of the vintage Electro Harmonix Sequencer Drum (no relation to the 8 step program), converted to use an LM13700 in place of the original’s 2 x rare CA3094, and with an on-board charge pump to provide the required 15V supply. An 8-step sequencer capable of creating exciting rhythms, bleeps, bloops, controlling external devices and…

Build doc posted below

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 104 rows

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RefValueNormalizedTypeNotes
Resistors 42
R122from schematic
R222from schematic
R311from schematic
R411from schematic
R511from schematic
R611from schematic
R711from schematic
R822from schematic
R911from schematic
R1022from schematic
R1110k10kfrom schematic
R1211from schematic
R1322from schematic
R1422from schematic
R1511from schematic
R1611from schematic
R1722from schematic
R1811from schematic
R1922from schematic
R2022from schematic
R2122from schematic
R2222from schematic
R2311from schematic
R2422from schematic
R2522from schematic
R2622from schematic
R2722from schematic
R2811from schematic
R2922from schematic
R3011from schematic
R3111from schematic
R3222from schematic
R3322from schematic
R3422from schematic
R3511from schematic
R3622from schematic
R3722from schematic
R3811from schematic
R3911from schematic
R4011from schematic
R5220k20kOCR
R54470K470kOCR
Capacitors 17
C110n10nfrom schematic
C247n47nfrom schematic
C32u22.2ufrom schematic
C41u1ufrom schematic
C510n10nfrom schematic
C6100n100nfrom schematic
C7470n470nfrom schematic
C810n10nfrom schematic
C922n22nfrom schematic
C1047n47nfrom schematic
C11100u100ufrom schematic
C12220u220ufrom schematic
C13220u220ufrom schematic
C14220u220ufrom schematic
C15100n100nfrom schematic
C16100n100nfrom schematic
C1722n22nfrom schematic
Diodes 23
D191n58171N5817from schematic
D201n58171N5817from schematic
D211n58171N5817from schematic
D221n40021N4002from schematic
D11n41481N4148OCR
D21n41481N4148OCR
D31n41481N4148OCR
D41n41481N4148OCR
D51n41481N4148OCR
D71n41481N4148OCR
D81n41481N4148OCR
D91n41481N4148OCR
D101n41481N4148OCR
D111n41481N4148OCR
D121n41481N4148OCR
D131n41481N4148OCR
D141n41481N4148OCR
D151n41481N4148OCR
D161n41481N4148OCR
D171n41481N4148OCR
D181n41481N4148OCR
D1161n41481N4148OCR
D1991n88171N8817OCR
Transistors 18
Q12N50882N5088OCR
Q22N50872N5087OCR
Q32N50882N5088OCR
Q42N50882N5088OCR
Q52N50872N5087OCR
Q62N50872N5087OCR
Q72N50872N5087OCR
Q82N50872N5087OCR
Q92N50882N5088OCR
Q102N50882N5088OCR
Q112N50882N5088OCR
Q122N50882N5088OCR
Q132N50882N5088OCR
Q142N50882N5088OCR
Q152N50882N5088OCR
Q162N50882N5088OCR
Q172N50882N5088OCR
Q182N50882N5088OCR
ICs 2
IC11LT1054LT1054from schematic
IC1278L1578L15OCR
Potentiometers 2
Decay100KBB100kPotentiometerfrom schematic
Rate1MCC1MPotentiometerfrom schematic